of the senate foreign relations committee, john kerry, wants more answers, co-signing a bipartisan letter asking for more details. but he told nbc's andrea mitchell that it should not be a partisan issue. >> the republicans are working overtime to try to exploit a very normal, run of the course, administrative letter that we agreed to on a bipartisan basis in our committee, simply to get some additional questions put in front of the state department. >> reporter: republicans also question how good the investigation can be when security concerns have stopped an fbi team from getting to the crime scene, having to work instead from libya's capitol city of tripoli, 400 miles away. a official said that while that is limited, it is more important to question people in libya thought to know about the attack. and he says the process is yielding more valuable information. one other note, peter king, chairman of the house committee, said that ambassador susan rice should resign because of her statement. >>> all right, we want to turn to andrea mitchell, chief foreign correspondent, and andrea how rare is
